Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU
The AirTAC Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU is a genuine double acting round-body mini air cylinder with a Ø16mm bore and 40mm stroke, 1/8" air ports and a stainless-steel barrel and rod for mildly corrosive environments. Its ISO 6432 mounting interface makes it a compact drop-in for standard mini-cylinder fixtures.
- BoreØ16 mm
- Stroke40 mm
- Port size1/8"
- Acting typeDouble acting
- Rod threadM6×1.0
- CushionFixed TPU bumper pads
About the Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU
Delivering 100.5 N of push force at 0.5 MPa, this double-acting stainless-steel round-body mini cylinder handles compact automation with ease. The riveted Ø16 mm barrel and rod shrug off mild corrosion, giving it a real edge over painted alternatives in damp or washdown environments. Its 40 mm stroke operates at 30-800 mm/s, and the integrated piston magnet (-S) supports CMSG, DMSG and EMSG switches for position detection.
For practical sizing, plan for about 60 N of real work at 0.5 MPa rather than the absolute maximum, which means it lifts roughly 5.1 kg vertically with a 2:1 safety margin. The U-type back cover provides a 90-degree port orientation for tight routing, while fixed TPU bumper pads absorb the stroke-end impact. It conforms to ISO 6432 mounting dimensions, dropping directly into standard mini-cylinder brackets and clevises.
Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU Technical Specifications
| Model | Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU |
|---|---|
| Series | MI ISO 6432 mini cylinder |
| Bore size | Ø16 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | 1/8" |
| Rod thread | M6×1.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Fixed TPU bumper pads |
| Max standard stroke | Up to 500 mm |
Specifications follow the official AirTAC MI/MIC (ISO 6432) datasheet. Barrel & rod: stainless steel (round-body, riveted construction). Thread options: PT (blank) / G.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 101 N | 86 N |
| 0.7 MPa | 141 N | 121 N |
| Max (@1.0 MPa) | 21 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU
| MI | ISO 6432 round-body mini cylinder (double-acting). |
|---|---|
| 16 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSG / DMSG / EMSG sensors. |
MI-family variants: MI / MIC (double acting ±cushion), MSI / MTI (single acting push / pull), MID / MICD (double rod ±cushion), MIJ / MICJ (adjustable stroke ±cushion). Back covers CA / U / R / CM. Mounting LB / FA / SDB / TC.
Where the Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU Is Used
PCB Depaneling Gate
Cycles a 40 mm stroke to actuate a routing gate on an electronics assembly line, using the 100.5 N push force to shift light aluminium jigs.
Carton Flap Folder
Tucks small corrugated carton flaps on a packaging conveyor, where the stainless steel barrel resists humidity and the U-cover keeps air lines tucked away.
Lab Sample Ejector
Pushes prepared test tubes out of a centrifuge carousel, lifting roughly 5.1 kg of vertical mass safely with its built-in magnet for position confirmation.
Is the Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU the Right Cylinder?
When sizing this bore, stepping down to a Ø12 unit drops the push force to 56.5 N, whereas moving up to a Ø20 bore raises it to 157.0 N at 0.5 MPa. This 40 mm stroke is well within the 500 mm maximum, keeping the Ø6 rod stable with minimal side-load bending risk. You can mount it via LB foot, FA flange, SDB pivot or TC trunnion hardware.
Because the fixed TPU pads only decelerate the piston near the end of travel, they act purely as bumpers and never as an adjustable air cushion. If your application must hold a vertical load when air pressure drops or the valve is centred, the piston will drift; add an external rod lock or a pilot-operated check valve to secure the position.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT / G)
- ✓ Magnet (-S) for sensors?
- ✓ Back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC)
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Do not dismantle the riveted front/back covers.
- check Use correct back cover (CA/U/R/CM) & mount (LB/FA/SDB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac MI16-20 Stainless Steel Mini Cylinder MI16X40SU FAQ
At 0.5 MPa it provides 100.5 N push and 86.4 N pull. At 0.7 MPa it provides 140.7 N push and 120.9 N pull. The theoretical maximum force is 20.5 kgf at 1.0 MPa, and the air port size is 1/8".
No, the piston will drift if air is lost or the valve is centred. The fixed TPU bumper pads only decelerate the stroke end and do not act as a brake. To maintain a vertical position, you must install an external rod lock or a pilot-operated check valve.
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